﻿
var b64map="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var b64pad="=";

function rsabase64encode(h) {
  var i;
  var c;
  var ret = "";
  for(i = 0; i+3 <= h.length; i+=3) {
    c = parseInt(h.substring(i,i+3),16);
    ret += b64map.charAt(c >> 6) + b64map.charAt(c & 63);
  }
  if(i+1 == h.length) {
    c = parseInt(h.substring(i,i+1),16);
    ret += b64map.charAt(c << 2);
  }
  else if(i+2 == h.length) {
    c = parseInt(h.substring(i,i+2),16);
    ret += b64map.charAt(c >> 2) + b64map.charAt((c & 3) << 4);
  }
  while((ret.length & 3) > 0) ret += b64pad;
  return ret;
}

var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var base64DecodeChars = new Array(
 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
 -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
 -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1);

function base64encode(str) {
 var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 var out, i, len;
 var c1, c2, c3;
 len = str.length;
 i = 0;
 out = "";
 while(i < len) {
  c1 = str.charCodeAt(i++) & 0xff;
  if(i == len) {
   out += base64EncodeChars.charAt(c1 >> 2);
   out += base64EncodeChars.charAt((c1 & 0x3) << 4);
   out += "==";
   break;
  }
  c2 = str.charCodeAt(i++);
  if(i == len) {
   out += base64EncodeChars.charAt(c1 >> 2);
   out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
   out += base64EncodeChars.charAt((c2 & 0xF) << 2);
   out += "=";
   break;
  }
  c3 = str.charCodeAt(i++);
  out += base64EncodeChars.charAt(c1 >> 2);
  out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
  out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
  out += base64EncodeChars.charAt(c3 & 0x3F);
 }
 return out;
}

function base64decode(str) {
 var c1, c2, c3, c4;
 var i, len, out;
 len = str.length;
 i = 0;
 out = "";
 while(i < len) {
  do {
   c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
  } while(i < len && c1 == -1);
  if (c1 == -1) break;
  do {
   c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
  } while(i < len && c2 == -1);
  if (c2 == -1) break;
  out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4));
  do {
   c3 = str.charCodeAt(i++) & 0xff;
   if (c3 == 61)  return out;
   c3 = base64DecodeChars[c3];
  } while(i < len && c3 == -1);
  if(c3 == -1) break;
  out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2));
  do {
   c4 = str.charCodeAt(i++) & 0xff;
   if(c4 == 61) return out;
   c4 = base64DecodeChars[c4];
  } while(i < len && c4 == -1);
  if(c4 == -1) break;
  out += String.fromCharCode(((c3 & 0x03) << 6) | c4);
 }
 return out;
}

function chartoint(t){
	var x;
	if (t >= 'a') {
		x=  10 +  parseInt(t) -  0x61;
	} else {
		x =  0 +  parseInt(t) - 0x30 ;
	
	}
	return x;

}
function hextostr(s) {
	var out = "";
	out = String(out);
	for (var i =0 ; i < s.length/2; ++i) {
		var h =chartoint( s.charCodeAt(i*2));
		var x =	chartoint(s.charCodeAt(i*2+1));
		var vv = (h << 4) + x;
		out += String.fromCharCode(vv);	
	}	
	return out;
}
 